KR20050021898A - 열적 돌출량을 부상량 관리에 이용하는 기능을 갖는 자기디스크 장치, 그 기능을 갖는 검사 장치 - Google Patents

열적 돌출량을 부상량 관리에 이용하는 기능을 갖는 자기디스크 장치, 그 기능을 갖는 검사 장치 Download PDF

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Publication number
KR20050021898A
KR20050021898A KR1020040067872A KR20040067872A KR20050021898A KR 20050021898 A KR20050021898 A KR 20050021898A KR 1020040067872 A KR1020040067872 A KR 1020040067872A KR 20040067872 A KR20040067872 A KR 20040067872A KR 20050021898 A KR20050021898 A KR 20050021898A
Authority
KR
South Korea
Prior art keywords
amount
magnetic disk
tpr
function
recording
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
KR1020040067872A
Other languages
English (en)
Korean (ko)
Inventor
모리나가아키라
마루야마요지
이데히로시
미야모토노리후미
Original Assignee
히다치 글로벌 스토리지 테크놀로지스 네덜란드 비.브이.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 히다치 글로벌 스토리지 테크놀로지스 네덜란드 비.브이. filed Critical 히다치 글로벌 스토리지 테크놀로지스 네덜란드 비.브이.
Publication of KR20050021898A publication Critical patent/KR20050021898A/ko
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/16—Supporting the heads; Supporting the sockets for plug-in heads
    • G11B21/20—Supporting the heads; Supporting the sockets for plug-in heads while the head is in operative position but stationary or permitting minor movements to follow irregularities in surface of record carrier
    • G11B21/21—Supporting the heads; Supporting the sockets for plug-in heads while the head is in operative position but stationary or permitting minor movements to follow irregularities in surface of record carrier with provision for maintaining desired spacing of head from record carrier, e.g. fluid-dynamic spacing, slider
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/60—Fluid-dynamic spacing of heads from record-carriers
    • G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/313—Disposition of layers
    • G11B5/3133—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure
    • G11B5/3136—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure for reducing the pole-tip-protrusion at the head transducing surface, e.g. caused by thermal expansion of dissimilar materials
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/60—Fluid-dynamic spacing of heads from record-carriers
    • G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion
    • G11B5/6011—Control of flying height
    • G11B5/607—Control of flying height using thermal means

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Digital Magnetic Recording (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
KR1020040067872A 2003-08-28 2004-08-27 열적 돌출량을 부상량 관리에 이용하는 기능을 갖는 자기디스크 장치, 그 기능을 갖는 검사 장치 Ceased KR20050021898A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JPJP-P-2003-00303828 2003-08-28
JP2003303828A JP4223897B2 (ja) 2003-08-28 2003-08-28 サーマルプロトリューション量を浮上量管理に用いる機能を持つ磁気ディスク装置、その機能を有す検査装置。

Publications (1)

Publication Number Publication Date
KR20050021898A true KR20050021898A (ko) 2005-03-07

Family

ID=34191239

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020040067872A Ceased KR20050021898A (ko) 2003-08-28 2004-08-27 열적 돌출량을 부상량 관리에 이용하는 기능을 갖는 자기디스크 장치, 그 기능을 갖는 검사 장치

Country Status (7)

Country Link
US (1) US7330324B2 (https=)
EP (1) EP1517307A1 (https=)
JP (1) JP4223897B2 (https=)
KR (1) KR20050021898A (https=)
CN (1) CN1308957C (https=)
SG (1) SG109594A1 (https=)
TW (1) TW200511236A (https=)

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KR100856127B1 (ko) * 2007-02-12 2008-09-03 삼성전자주식회사 하드디스크 드라이브, ｔａ 시그널을 이용한 하드디스크드라이브의 ｆｏｄ 제어방법 및 그 방법을 수행하는 컴퓨터프로그램을 기록한 기록매체
KR100901838B1 (ko) * 2006-03-28 2009-06-09 후지쯔 가부시끼가이샤 기억 장치, 제어 장치, 제어 방법 및 프로그램을 기록한컴퓨터 판독가능한 기록 매체

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JP2005251312A (ja) * 2004-03-04 2005-09-15 Tdk Corp 磁気ヘッドドライブ回路及び磁気ディスク装置
US7190547B2 (en) * 2004-12-30 2007-03-13 Samsung Electronics Co., Ltd. Methods for detecting contact between a read-write head and the accessed disk surface in a hard disk drive
JP4979894B2 (ja) * 2005-03-25 2012-07-18 ヒタチグローバルストレージテクノロジーズネザーランドビーブイ 磁気ディスク装置
JP4895560B2 (ja) * 2005-09-22 2012-03-14 ヒタチグローバルストレージテクノロジーズネザーランドビーブイ データ記憶装置
US7342736B1 (en) * 2005-10-07 2008-03-11 Maxtor Corporation Methods and disk drive that measure head flying height at power-on/off
US7180692B1 (en) 2005-12-27 2007-02-20 Hitachi Global Storage Technologies Netherlands B.V. System and method for calibrating and controlling a fly-height actuator in a magnetic recording disk drive
US7215495B1 (en) 2005-12-27 2007-05-08 Hitachi Global Storage Technologies Netherlands B.V. System and method for determining head-disk contact in a magnetic recording disk drive
US7280305B2 (en) * 2006-01-13 2007-10-09 Samsung Electronics Co., Ltd. Method and apparatus for estimating and controlling the flying height of a read-write head in a hard disk drive
US7573668B2 (en) * 2006-01-16 2009-08-11 Samsung Electronics Co., Ltd. Method and apparatus for sensing leakage current to estimate and possibly adjust flying height of a read-write head in a hard disk drive
US7292401B2 (en) 2006-03-14 2007-11-06 Hitachi Global Storage Technologies Netherlands B.V. System and method for determining head-disk contact in a magnetic recording disk drive by magnetoresistive signal amplitude
JP4379814B2 (ja) 2006-03-28 2009-12-09 富士通株式会社 記憶装置、制御方法、制御装置及びプログラム
US7558015B2 (en) * 2006-03-29 2009-07-07 Maxtor Corporation Actuation efficiency based contact detection
JP2007310978A (ja) 2006-05-19 2007-11-29 Fujitsu Ltd ヘッド浮上量制御方法及び装置、記憶装置及びプログラム
JP4908106B2 (ja) 2006-08-18 2012-04-04 東芝ストレージデバイス株式会社 記憶装置、制御方法、制御装置及びプログラム
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JP4728929B2 (ja) 2006-10-31 2011-07-20 東芝ストレージデバイス株式会社 制御装置、制御方法及び記憶装置
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JP4805860B2 (ja) 2007-02-05 2011-11-02 東芝ストレージデバイス株式会社 浮上量測定装置、記憶装置および浮上量測定方法
JP2008243249A (ja) 2007-03-26 2008-10-09 Fujitsu Ltd 記憶装置ならびに記憶装置の制御装置
JP2008243288A (ja) * 2007-03-27 2008-10-09 Fujitsu Ltd 磁気記憶装置、制御装置及び浮上量制御方法
KR100897561B1 (ko) 2007-04-27 2009-05-15 삼성전자주식회사 하드디스크 드라이브, 하드디스크 드라이브의 자기 헤드의부상높이 제어 방법 및 그 방법을 수행하는 컴퓨터프로그램을 기록한 기록매체
US8665562B2 (en) * 2007-11-13 2014-03-04 Emc Corporation Method of reliable usage of dynamic fly-height control at environmental extremes
JP2009199660A (ja) * 2008-02-21 2009-09-03 Fujitsu Ltd 磁気記録媒体の媒体欠陥検出方法及び磁気記憶装置
JP4836282B2 (ja) 2008-06-12 2011-12-14 東芝ストレージデバイス株式会社 ヘッド浮上量調整方法及び書き込み電流値決定方法、並びに記憶装置
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JP2010061740A (ja) * 2008-09-04 2010-03-18 Toshiba Storage Device Corp 浮上変動量測定方法、磁気記憶装置
US7830634B2 (en) * 2008-12-23 2010-11-09 Hitachi Global Storage Technologies Netherlands, B.V. Head-disk contact detection and work function difference determination
US7719786B1 (en) * 2008-12-23 2010-05-18 Hitachi Global Storage Technologies Netherlands B.V. Active fly height control using radio frequency feedback
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JP5805999B2 (ja) * 2011-05-25 2015-11-10 レノボ・シンガポール・プライベート・リミテッド 磁気記録装置、その診断方法、及びコンピュータが実行可能なプログラム
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US8982502B2 (en) * 2011-12-12 2015-03-17 HGST Netherlands B.V. Hard disk drive with write assist based on detected conditions
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Publication number Priority date Publication date Assignee Title
KR100901838B1 (ko) * 2006-03-28 2009-06-09 후지쯔 가부시끼가이샤 기억 장치, 제어 장치, 제어 방법 및 프로그램을 기록한컴퓨터 판독가능한 기록 매체
KR100856127B1 (ko) * 2007-02-12 2008-09-03 삼성전자주식회사 하드디스크 드라이브, ｔａ 시그널을 이용한 하드디스크드라이브의 ｆｏｄ 제어방법 및 그 방법을 수행하는 컴퓨터프로그램을 기록한 기록매체
US7583467B2 (en) 2007-02-12 2009-09-01 Samsung Electronics Co., Ltd. Hard disk drive apparatus, method to control flying on demand of hard disk drive apparatus using thermal asperity signal, and recording media for computer program thereof

Also Published As

Publication number Publication date
EP1517307A1 (en) 2005-03-23
TW200511236A (en) 2005-03-16
JP2005071546A (ja) 2005-03-17
JP4223897B2 (ja) 2009-02-12
US20050046985A1 (en) 2005-03-03
CN1591662A (zh) 2005-03-09
US7330324B2 (en) 2008-02-12
SG109594A1 (en) 2005-03-30
CN1308957C (zh) 2007-04-04

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